US7762277B2 - Hydraulic pressure supplying device for transmission - Google Patents

Hydraulic pressure supplying device for transmission Download PDF

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Publication number
US7762277B2
US7762277B2 US11/214,893 US21489305A US7762277B2 US 7762277 B2 US7762277 B2 US 7762277B2 US 21489305 A US21489305 A US 21489305A US 7762277 B2 US7762277 B2 US 7762277B2
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United States
Prior art keywords
oil pump
transmission
oil
mounting hole
hydraulic pressure
Prior art date
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Application number
US11/214,893
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English (en)
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US20060042700A1 (en
Inventor
Shunsuke Yoshida
Tetsuya Mochizuki
Naohisa Morishita
Yoshimichi Tsubata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to HONDA MOTOR CO., LTD. reassignment HONDA MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MOCHIZUKI, TETSUYA, MORISHITA, NAOHISA, TSUBATA, YOSHIMICHI, YOSHIDA, SHUNSUKE
Publication of US20060042700A1 publication Critical patent/US20060042700A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • F16H61/0031—Supply of control fluid; Pumps therefore using auxiliary pumps, e.g. pump driven by a different power source than the engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/794—With means for separating solid material from the fluid
    • Y10T137/7976—Plural separating elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural
    • Y10T137/86163—Parallel

Definitions

  • the present invention relates to a hydraulic pressure supplying device for a transmission, and more particularly to a hydraulic pressure supplying device for a transmission in a hybrid vehicle or the like having a main oil pump and an auxiliary oil pump such as an electric oil pump.
  • a vehicle having an engine adapted to be temporarily stopped for the purposes of improvement in fuel economy and emission reduction of carbon dioxide such as a hybrid vehicle and a vehicle having an idling stop engine.
  • a mechanical oil pump for supplying oil to a hydraulic control unit in the automatic transmission is provided in interlocking relationship with the engine, so that the mechanical oil pump is stopped when the engine is stopped.
  • an electric oil pump for supplying oil to the hydraulic control unit in an auxiliary manner is therefore provided to normally perform hydraulic control at starting of the vehicle.
  • Japanese Patent Laid-open No. Hei 11-287316 discloses a hydraulic pressure supplying device for a transmission including a first oil pump (main oil pump) adapted to be driven by a main shaft of the transmission, a second oil pump (auxiliary oil pump) adapted to be driven by an electric motor, and a check valve provided between the discharge side of the second oil pump and the discharge side of the first oil pump to prevent the flow of oil from the first oil pump to the second oil pump.
  • the first oil pump and the second oil pump are connected to individual strainers.
  • the hydraulic pressure supplying device disclosed in Japanese Patent Laid-open No. Hei 11-287316 mentioned above has the following problem.
  • foreign matter is generated in the second oil pump because of chip scratching or the like or in the case that foreign matter is generated because of failure or the like of the hydraulic control unit in the transmission, there is a possibility that the foreign matter may cause adverse effects on the function of the check valve or the first or second oil pump.
  • a hydraulic pressure supplying device for a transmission including a first oil pump adapted to be driven by a main shaft of the transmission; at least one second oil pump adapted to be driven by suitable means; a check valve provided between the discharge side of the first oil pump and the discharge side of the second oil pump to prevent the flow of oil from the first oil pump to the second oil pump; and a first filter provided between the second oil pump and the check valve.
  • the hydraulic pressure supplying device further includes a second filter provided between the first oil pump and the check valve. Accordingly, it is possible to prevent that foreign matter generated in the first oil pump and the hydraulic control unit may cause damage to the second oil pump.
  • the hydraulic pressure supplying device further includes a third filter provided between the second oil pump and a strainer provided in the transmission. Accordingly, even when foreign matter enters the device in the case of installing parts or repairing the strainer, it is possible to prevent that the foreign matter may cause damage to the first and second pumps and the hydraulic control unit in the transmission.
  • the hydraulic pressure supplying device further includes a suction pipe connected to the suction side of the second oil pump, and the third filter is provided in the suction pipe.
  • the third filter is provided in the suction pipe, the positioning and installation of the third filter can be easily performed.
  • the hydraulic pressure supplying device further includes a delivery pipe connected to the discharge side of the second oil pump, and the first and second filters are provided in the delivery pipe.
  • the first and second filters are provided in the delivery pipe, the positioning and installation of the first and second filters can be easily performed.
  • the second oil pump, the suction pipe, and the delivery pipe are removably mounted on a transmission case from the outside of the transmission.
  • FIG. 1 is a schematic diagram showing a system configuration of the present invention
  • FIG. 2 is a side view of a transmission with a second oil pump assembly in the condition where a transmission case is partially removed;
  • FIG. 3 is an enlarged sectional view showing oil inlet and outlet portions of the second oil pump assembly shown in FIG. 2 .
  • FIG. 1 shows a system configuration of the hydraulic pressure supplying device according to the present invention.
  • a first oil pump 6 is driven by a main shaft of a transmission.
  • Reference numeral 10 denotes a second oil pump group consisting of a plurality of second oil pumps 8 .
  • Each second oil pump 8 is driven by suitable driving means such as an electric motor.
  • This suitable driving means includes an auxiliary engine or the like provided independently of a main engine for driving a vehicle.
  • the suction side of the first oil pump 6 and the suction side of each second oil pump 8 are connected to a strainer 4 of the transmission.
  • a check valve 12 is interposed between the discharge side of the first oil pump 6 and the discharge side of each second oil pump 8 to prevent the flow of oil from the first oil pump 6 to the second oil pump 8 .
  • the check valve 12 permits the flow of oil from each second oil pump 8 to the discharge side of the first oil pump 6 . Accordingly, the oil discharged from the first oil pump 6 and the oil discharged from each second oil pump 8 are supplied together to a hydraulic control unit in the transmission.
  • a first filter 14 is provided between each second oil pump 8 and the corresponding check valve 12 . Accordingly, it is possible to prevent that foreign matter generated in the case of failure of any one of the second oil pumps 8 may cause damage to the corresponding check valve 12 , the first oil pump 6 , and the hydraulic control unit in the transmission.
  • a second filter 16 is provided between the first oil pump 6 and each check valve 12 connected to the corresponding second oil pump 8 . Accordingly, it is possible to prevent that foreign matter generated in the first oil pump 6 and the hydraulic control unit may cause damage to each check valve 12 .
  • a third filter 18 is provided between the strainer 4 and each second oil pump 8 . Accordingly, even when foreign matter enters the device in the case of installing parts or repairing the strainer 4 , it is possible to prevent that the foreign matter may cause damage to the first and second oil pumps 6 and 8 and the hydraulic control unit in the transmission.
  • FIG. 2 is a side view of a transmission including a second oil pump assembly 20
  • FIG. 3 is an enlarged sectional view showing in detail an oil inlet portion and an oil outlet portion of the second oil pump assembly 20 .
  • the second oil pump assembly 20 is detachably mounted on a transmission case 2 .
  • the second oil pump assembly 20 includes an oil pump base 22 , a second oil pump 8 mounted on the oil pump base 22 , and an electric motor 24 for driving the second oil pump 8 .
  • the oil pump base 22 of the second oil pump assembly 20 is detachably fixed to the transmission case 2 by using a plurality of bolts.
  • the oil from the strainer 4 is introduced through a tube 26 and a suction pipe 28 into the second oil pump 8 , and the oil discharged from the second oil pump 8 is supplied through a delivery pipe 30 to the hydraulic control unit in the transmission.
  • the suction pipe 28 is accommodated in a pipe mounting hole 34 formed on the transmission case 2 and a pipe mounting hole 36 formed on the oil pump base 22 .
  • the delivery pipe 30 is accommodated in a pipe mounting hole 38 formed on the transmission case 2 and a pipe mounting hole 40 formed on the oil pump base 22 .
  • the delivery pipe 30 has a shoulder portion 32 , through which a large-diameter portion 30 a and a small-diameter portion 30 b are connected with each other.
  • the pipe mounting hole 38 has a diameter larger than that of the pipe mounting hole 40 .
  • the reason for the formation of the shoulder portion 32 on the delivery pipe 30 is to limit the direction of installation of the check valve 12 composed of a valve seat 42 and a ball 44 to one direction.
  • a pin 46 is press-fitted in the delivery pipe 30 to thereby limit the stroke of the ball 44 of the check valve 12 .
  • the first filter 14 and the second filter 16 are set at the opposite ends of the delivery pipe 30 .
  • the first and second filters 14 and 16 are formed as mesh filters of stainless steel, for example, and they have flanges 14 a and 16 a, respectively.
  • the flange 14 a of the first filter 14 is sandwiched between one end of the delivery pipe 30 and the bottom of the pipe mounting hole 40 .
  • the flange 16 a of the second filter 16 is sandwiched between the other end of the delivery pipe 30 and the bottom of the pipe mounting hole 38 . Accordingly, the removal of the first and second filters 14 and 16 from the delivery pipe 30 can be prevented.
  • the third filter 18 has a flange 18 a, and the flange 18 a is sandwiched between one end of the suction pipe 28 and the bottom of the pipe mounting hole 36 , thereby preventing the removal of the third filter 18 from the suction pipe 28 .
  • a pair of O-rings 48 and 50 are provided on the outer circumference of the suction pipe 28 to thereby prevent the leakage of oil flowing in the suction pipe 28 and the suction of the outside air into the suction pipe 28 .
  • a pair of O-rings 52 and 54 are provided on the outer circumference of the delivery pipe 30 to thereby prevent the leakage of oil flowing in the delivery pipe 30 .
  • an O-ring 56 is provided on the interface between the transmission case 2 and the oil pump base 22 so as to surround the suction pipe 28 and the delivery pipe 30 . Accordingly, even if any one of the O-rings 48 , 50 , 52 , and 54 is damaged to cause the leakage of oil flowing in the suction pipe 28 or the delivery pipe 30 , the leaked oil can be reliably sealed by the O-ring 56 to prevent the oil leakage from the interface between the oil pump base 22 and the transmission case 2 .
  • the second oil pump assembly 20 , the suction pipe 28 , and the delivery pipe 30 are removably mounted on the transmission case 2 from the outside of the transmission. Accordingly, even if clogging of the filters 14 , 16 , and 18 or lodging of the check valve 12 occurs, the filters 14 , 16 , and 18 can be easily replaced or the check valve 12 can be easily repaired.
  • FIGS. 2 and 3 employs the single second oil pump assembly 20 including the electric motor 24
  • the present invention is not limited to this configuration, but a plurality of second oil pump assemblies may be provided as shown in FIG. 1 . In this case, there is a merit such that even if any one of the second oil pump assemblies fails, the remaining second pump assembly or assemblies can be used instead.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Details Of Gearings (AREA)
  • Details Of Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
US11/214,893 2004-09-01 2005-08-31 Hydraulic pressure supplying device for transmission Active 2027-09-16 US7762277B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-254452 2004-09-01
JP2004254452A JP4205026B2 (ja) 2004-09-01 2004-09-01 トランスミッションの油圧供給装置

Publications (2)

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US20060042700A1 US20060042700A1 (en) 2006-03-02
US7762277B2 true US7762277B2 (en) 2010-07-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/214,893 Active 2027-09-16 US7762277B2 (en) 2004-09-01 2005-08-31 Hydraulic pressure supplying device for transmission

Country Status (3)

Country Link
US (1) US7762277B2 (zh)
JP (1) JP4205026B2 (zh)
CN (1) CN100516602C (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100242669A1 (en) * 2009-03-30 2010-09-30 Aisin Aw Co., Ltd. Vehicle drive apparatus
US20110077121A1 (en) * 2009-09-28 2011-03-31 Mazda Motor Corporation Automatic transmission drive apparatus for vehicle
US10711876B1 (en) * 2019-10-28 2020-07-14 Saptfc Holding, Llc Reinforcement sealing tubes for stabilizing a housing in an automobile transmission

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4499021B2 (ja) 2005-11-17 2010-07-07 トヨタ自動車株式会社 車輌用伝動装置
KR100926552B1 (ko) * 2007-11-20 2009-11-12 현대자동차주식회사 하이브리드 자동차의 자동 변속기
DE102008040815A1 (de) * 2008-07-29 2010-02-04 Zf Friedrichshafen Ag Getriebe eines Antriebsstrangs
GB2472812A (en) * 2009-08-19 2011-02-23 Gm Global Tech Operations Inc Method of operating an oil supply using an estimated future oil pressure
JP5273009B2 (ja) * 2009-10-20 2013-08-28 トヨタ自動車株式会社 車両用油路連結装置
JP5461506B2 (ja) * 2011-11-07 2014-04-02 本田技研工業株式会社 油路の接続構造
EP2672112A1 (en) * 2012-06-05 2013-12-11 ZF Wind Power Antwerpen NV Method for lubricating a gearbox for a wind turbine
JP6228841B2 (ja) * 2013-12-26 2017-11-08 本田技研工業株式会社 動力装置
DE102014111721A1 (de) 2014-08-18 2016-02-18 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Fluidbeaufschlagungsvorrichtung für ein Getriebe für ein Kraftfahrzeug
JP6353339B2 (ja) * 2014-10-15 2018-07-04 ヤンマー株式会社 作業車両

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1032502A (en) * 1911-05-15 1912-07-16 Penberthy Injector Co Lubricator.
US3964585A (en) * 1975-03-13 1976-06-22 Kubota Tekko Kabushiki Kaisha Hydraulic double clutch of the wet type with pressure control valves
JPH11287316A (ja) 1998-04-03 1999-10-19 Aisin Aw Co Ltd 油圧供給装置
US5996688A (en) * 1998-04-28 1999-12-07 Ecoquip Artificial Lift, Ltd. Hydraulic pump jack drive system for reciprocating an oil well pump rod
US6142037A (en) * 1999-06-23 2000-11-07 Daimlerchrysler Corporation Transmission check valve
US6364431B1 (en) * 1999-08-27 2002-04-02 Denso Corporation Electromagnetic valve and hydraulic circuit
JP2002364737A (ja) 2001-06-11 2002-12-18 Aisin Aw Co Ltd オイルポンプのストレーナ及びそれを用いた車輌
US6688325B2 (en) * 2000-05-23 2004-02-10 Burkert Werke Gmbh & Co. Modular fluid control system
JP2004060572A (ja) 2002-07-30 2004-02-26 Aisin Seiki Co Ltd 内燃機関のバルブタイミング制御装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518825A (en) * 1946-06-27 1950-08-15 Howard W Simpson Transmission

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1032502A (en) * 1911-05-15 1912-07-16 Penberthy Injector Co Lubricator.
US3964585A (en) * 1975-03-13 1976-06-22 Kubota Tekko Kabushiki Kaisha Hydraulic double clutch of the wet type with pressure control valves
JPH11287316A (ja) 1998-04-03 1999-10-19 Aisin Aw Co Ltd 油圧供給装置
US5996688A (en) * 1998-04-28 1999-12-07 Ecoquip Artificial Lift, Ltd. Hydraulic pump jack drive system for reciprocating an oil well pump rod
US6142037A (en) * 1999-06-23 2000-11-07 Daimlerchrysler Corporation Transmission check valve
US6364431B1 (en) * 1999-08-27 2002-04-02 Denso Corporation Electromagnetic valve and hydraulic circuit
US6688325B2 (en) * 2000-05-23 2004-02-10 Burkert Werke Gmbh & Co. Modular fluid control system
JP2002364737A (ja) 2001-06-11 2002-12-18 Aisin Aw Co Ltd オイルポンプのストレーナ及びそれを用いた車輌
JP2004060572A (ja) 2002-07-30 2004-02-26 Aisin Seiki Co Ltd 内燃機関のバルブタイミング制御装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100242669A1 (en) * 2009-03-30 2010-09-30 Aisin Aw Co., Ltd. Vehicle drive apparatus
US8522924B2 (en) * 2009-03-30 2013-09-03 Aisin Aw Co., Ltd. Vehicle drive apparatus
US20110077121A1 (en) * 2009-09-28 2011-03-31 Mazda Motor Corporation Automatic transmission drive apparatus for vehicle
US8413759B2 (en) * 2009-09-28 2013-04-09 Mazda Motor Corporation Automatic transmission drive apparatus for vehicle
US10711876B1 (en) * 2019-10-28 2020-07-14 Saptfc Holding, Llc Reinforcement sealing tubes for stabilizing a housing in an automobile transmission

Also Published As

Publication number Publication date
US20060042700A1 (en) 2006-03-02
JP4205026B2 (ja) 2009-01-07
CN100516602C (zh) 2009-07-22
JP2006070976A (ja) 2006-03-16
CN1743707A (zh) 2006-03-08

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